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PIN Code History: Whenever we send a letter, parcel, online shopping order or fill any kind of form, we have to write PIN Code along with our address. It is not just a 6 digit number, but an important identification number to ensure that the mail reaches the right place. Full name of PIN is Postal Index Number.

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Why was PIN code needed?
India is a very big country. There are thousands of cities, towns and lakhs of villages here. The names of many places are similar. For example, villages or towns with the same name may be found in different states. Earlier, when only name and address were written, many times the letters would reach the wrong address or would be received late.
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Who was the mastermind of PIN Code?
To overcome this problem, PIN Code system was started in India on 15 August 1972. It was created by Shriram Bhikaji Velankar, the additional secretary at that time. Its objective was to make sorting of mail simple and accurate.
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What do the 6 numbers of PIN code mean?
Every number of PIN code has its own significance.
First number – indicates the postal zone of India. The country is divided into 9 postal zones.
Second number – Gives information about the sub zone of that area.
Third Third – Identifies the corresponding sorting district.
And the last 3 numbers indicate the Post Office of that area.
This is the reason that with only number 6 the postal department is completely understood to which post office the letters or parcels have to be sent.
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Why is PIN code important even in online shopping?
At present PIN code is not limited to post only. E-commerce companies, banks, courier companies and government services also use it. When we fill our address on any website, then on the basis of PIN code it is decided whether there is delivery facility in that area or not. Many times the delivery charge, delivery time and available services are also decided on the basis of PIN code.
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Is PIN Code and ZIP Code the same?
The work of both is almost the same, but the names are different. PIN Code (Postal Index Number) is used in India. ZIP Code (Zone Improvement Plan Code) is used in the US. The objective of both is to deliver the post accurately and fast.
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